STMicroelectronics STM32F091RCT6

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM32F0
Packaging Tray |
Core Processor ARM® Cortex®-M0
Core Size 32-Bit Single-Core
Speed 48MHz
Connectivity CANbus, I2C, IrDA, LINbus, SPI, UART/USART
Peripherals DMA, I2S, POR, PWM, WDT
Number of I/O 52
Program Memory Size 256KB (256K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 32K x 8
Voltage - Supply (Vcc/Vdd) 2V ~ 3.6V
Data Converters A/D 19x12b; D/A 2x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 64-LQFP (10x10)
Package / Case 64-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STM32F091RCT6 is an STMicroelectronics microcontroller built on the energy-efficient ARM Cortex-M0 core. Running at 48MHz, it offers 256KB flash and 32KB SRAM in a 64-pin LQFP. With DMA, I2S, and multiple PWM channels, it is designed for cost-sensitive applications requiring moderate processing and rich connectivity.

  • Cost-Effective Cortex-M0: Low power and small code footprint.
  • Large Flash: 256KB storage for complex applications.
  • I2S & DMA: Efficient audio and data streaming without CPU load.
  • Wide Temperature Range: -40°C to 85°C for industrial use.

Audio Processing Nodes

With I2S and DMA, it can stream audio data to external DACs for voice assistants.

IoT Edge Devices

Its 256KB flash allows storing firmware for MQTT clients and sensor protocols.

Motor Control for Pumps

Use PWM and ADC to implement sensorless FOC for small water pumps.

Smart Meters

The low-power modes and wide voltage range suit battery-backed utility meters.

Medical Monitoring

Process ECG or SpO2 signals with its 48MHz speed and multiple timers.

Lighting Control

Drive RGB LED drivers with PWM channels and communicate via DMX or DALI.

Q: What core does it use?
A: It uses an ARM Cortex-M0 core at 48MHz.
Q: What is the flash size?
A: It has 256KB flash and 32KB SRAM.
Q: What is the voltage range?
A: It operates from 2V to 3.6V.
Q: What package is available?
A: It comes in a 64-pin LQFP.
Q: Does it support I2S?
A: Yes, it includes I2S and DMA.
Base Product Number : STM32F091RC
256KB Flash 32-bit MCU 32KB RAM 48MHz ARM Cortex-M0 I2S IoT LQFP-64 STM32F091RCT6 STMicroelectronics
Q: What core does it use?
A: It uses an ARM Cortex-M0 core at 48MHz.
Q: What is the flash size?
A: It has 256KB flash and 32KB SRAM.
Q: What is the voltage range?
A: It operates from 2V to 3.6V.
Q: What package is available?
A: It comes in a 64-pin LQFP.
Q: Does it support I2S?
A: Yes, it includes I2S and DMA.